Chair shell



FIG. 1 is a front perspective view of a chair shell;

FIG. 2 is a front view of the chair shell of FIG. 1;

FIG. 3 is a rear view of the chair shell of FIG. 1;

FIG. 4 is a top plan view of the chair shell of FIG. 1; and,

FIG. 5 is a bottom plan view of the chair shell of FIG. 1.

The dash-dash broken lines, when present in the drawings, are for the purpose of illustrating the environment of the design and form no part of the claimed design. The dash-dot broken lines in the drawings define the bounds of the claimed design and form no part thereof. 

CLAIM The ornamental design for a chair shell, as shown and described. 